Cost to Run a 450-watt bread maker for 20 hours in California
Running a 450-watt bread maker for 20 hours uses 9 kWh and costs $2.88 at $0.32/kWh in California. Do that every day and it adds up to $86.40 a month.
Calculate your own cost
- Per hour
- $0.1440.45 kWh
- Per day
- $2.889 kWh
- Per week
- $20.1663 kWh
- Per month (30 days)
- $86.40270 kWh
- Per year
- $1,051.203,285 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 450-watt bread maker cost per hour?
At $0.32/kWh, it costs $0.144 per hour. The maths: 450 W ÷ 1,000 = 0.45 kWh per hour, × $0.32 = $0.144.
How much does it cost per month?
Used 20 hours a day for 30 days, it costs about $86.40 per month and uses 270 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
9 kWh per day, 270 kWh per month and 3,285 kWh per year at 20 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.
How can I lower the cost?
Use the correct loaf size and avoid leaving the keep-warm mode on. Check your bill for the exact rate and enter it above.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $27.00 and at 30¢ it is $81.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in California
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.45 kWh | $0.144 | $4.32 | $52.56 |
| 2 hours | 0.9 kWh | $0.288 | $8.64 | $105.12 |
| 3 hours | 1.35 kWh | $0.432 | $12.96 | $157.68 |
| 4 hours | 1.8 kWh | $0.576 | $17.28 | $210.24 |
| 5 hours | 2.25 kWh | $0.72 | $21.60 | $262.80 |
| 6 hours | 2.7 kWh | $0.864 | $25.92 | $315.36 |
| 7 hours | 3.15 kWh | $1.01 | $30.24 | $367.92 |
| 8 hours | 3.6 kWh | $1.15 | $34.56 | $420.48 |
| 9 hours | 4.05 kWh | $1.30 | $38.88 | $473.04 |
| 10 hours | 4.5 kWh | $1.44 | $43.20 | $525.60 |
| 11 hours | 4.95 kWh | $1.58 | $47.52 | $578.16 |
| 12 hours | 5.4 kWh | $1.73 | $51.84 | $630.72 |
| 13 hours | 5.85 kWh | $1.87 | $56.16 | $683.28 |
| 14 hours | 6.3 kWh | $2.02 | $60.48 | $735.84 |
| 15 hours | 6.75 kWh | $2.16 | $64.80 | $788.40 |
| 16 hours | 7.2 kWh | $2.30 | $69.12 | $840.96 |
| 17 hours | 7.65 kWh | $2.45 | $73.44 | $893.52 |
| 18 hours | 8.1 kWh | $2.59 | $77.76 | $946.08 |
| 19 hours | 8.55 kWh | $2.74 | $82.08 | $998.64 |
| 20 hours | 9 kWh | $2.88 | $86.40 | $1,051.20 |
| 21 hours | 9.45 kWh | $3.02 | $90.72 | $1,103.76 |
| 22 hours | 9.9 kWh | $3.17 | $95.04 | $1,156.32 |
| 23 hours | 10.4 kWh | $3.31 | $99.36 | $1,208.88 |
| 24 hours | 10.8 kWh | $3.46 | $103.68 | $1,261.44 |
How we worked it out
- Energy per hour: 450 W ÷ 1,000 = 0.45 kWh
- Cost per hour: 0.45 kWh × $0.32 = $0.144
- Cost per day: × 20 hours = $2.88
- Month and year: × 30 days = $86.40, × 365 days = $1,051.20
California electricity prices
California pays about $0.32 per kWh, which is 83% higher than the US average of $0.175. The same bread maker would cost $47.25 a month at the national average.
What it costs in different places
Same 450-watt bread maker, 20 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $47.25 |
| California | $0.32 | $86.40 |
| Texas | $0.155 | $41.85 |
| New York | $0.25 | $67.50 |
| Florida | $0.155 | $41.85 |
| Illinois | $0.17 | $45.90 |
| Pennsylvania | $0.18 | $48.60 |
| Ohio | $0.17 | $45.90 |
| Washington | $0.115 | $31.05 |
About bread maker running costs
Bread makers run a motor and heating element over a multi-hour cycle. The heating element dominates electricity use.
Typical sizes: 450 W, 600 W, 800 W, 1,000 W.
How to spend less: Use the correct loaf size and avoid leaving the keep-warm mode on.
What this estimate assumes
- The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
- Wattage is the typical label value, not a measured value. Check the label on your own appliance.
- The rate is an approximate residential average in California. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
- A month is 30 days and a year is 365 days.